Constraining a disformal Schwarzschild black hole in DHOST theories with the orbit of the S2 star

With the observed data of the S2 orbit around the black hole Sgr A ∗ and the Markov Chain Monte Carlo method, we make a constraint on parameters of a disformal Schwarzschild black hole in quadratic degenerate higher-order scalar-tensor (DHOST) theories. This black hole belongs to a class of non-stea...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 84; no. 8; pp. 827 - 8
Main Authors Zhang, Zelin, Chen, Songbai, Jing, Jiliang
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 18.08.2024
Springer Nature B.V
SpringerOpen
Subjects
Astronomy
Astrophysics and Cosmology
Black holes
Elementary Particles
Gravity
Hadrons
Heavy Ions
Markov chains
Measurement Science and Instrumentation
Monte Carlo simulation
Nuclear Energy
Nuclear Physics
Parameters
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article – Theoretical Physics
Relativity
Spacetime
String Theory
Tensors
Theory of relativity
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Summary:With the observed data of the S2 orbit around the black hole Sgr A ∗ and the Markov Chain Monte Carlo method, we make a constraint on parameters of a disformal Schwarzschild black hole in quadratic degenerate higher-order scalar-tensor (DHOST) theories. This black hole belongs to a class of non-stealth solutions and owns an extra disformal parameter described the deviation from general relativity. Our results show that the best fit value of the disformal parameter is positive. However, in the range of 1 σ , we also find that general relativity remains to be consistent with the observation of the S2 orbit.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-024-13179-6